Box making machine



Jan. '11, 1938. s. B. SCHEEFEY BOX MAKING MACHINE Filed Sept. 13, 1935 4 sheets'sheet 1 e. B. SCHEFFEY BOX MAKING MACHINE Filed Sept. 13, 1935 4 Sheets-Sheet 2 G. B. SCHEFFEY Jan. 11, 1938.

BOX MAKING MACHINE Filed Sept. 13, 1955 4 Sheets-Sheet 3 Jan. 11, 1938. G, B, SCHEFFEY 2,105,375

BOX MAKING MACHINE Filed Sept. 13, 1935 4 Sheets-Sheet 4 Patented Jan. 11, 1938 UNITED STATES PATENT OFFl-CE hn D. Tennant, Philadelphia, Pa.

Application September 13,1935, Serial No. 40,488

18 Claims.

This invention relates to an improvement in box-making machinery and more particularly to a machine for applying a paper cover to a blank of shell material for the manufacture of a set-up blank box.

Heretofore, in the manufacture of covered boxes, it has been diflicult to obtain proper registry between the cover paper and the shell material blank, as a result of which the cover paper on the box was not always positioned accurately and uniformly. Furthermore, when the cover paper is applied to the fiat blank of shell material, the bending of the blank to form the box causes the cover paper to be drawn around the edges of the box so as to leave exposed on the interior of the box adjacent the edges of the cover paper, lines of adhesive which are objectionable and unsightly.

The object of the present invention is to overcome these objectionable features by correctly positioning the cover paper on the blank and at the same time to eliminate unsightly edges of adhesive along the inner edges of the cover paper, so that the cover paper will be applied and maintained on the box against displacement and will present a neat and desirable appearance to the box.

In carrying out this object of the invention, I preferably take up a slight amount of the cover paper just prior to its application to the blank of shell material, so as to allow a slight lateral stretching or' extension of the cover paper after set-up box without displacing of the inner edges of the cover paper.

I have illustrated a preferred embodiment of my invention in the accompanying drawings in which:

Fig. 1 is a diagrammatic view of a portion of a box-'makingmachine showing the application of my invention thereto;

Fig. 2 is a quarter sectional view through the suction roll; I

Fig. 3 is a transverse sectional view therethrough taken on the line 33, of Fig. 2;

Fig. 4 is a disassembled perspective view of portions of the suction roll;

Fig. 5 is a disassembled perspective view of the rings and blades for the suction roll;

Fig. 6 is a perspective view of the shell material and cover paper blanks;

Fig. 7 is a transverse sectional view therethrough;

Fig. 8 is a perspective view of the partially completed box blank;

Fig. 9 is a. detail perspective view of an end of the completed blank.

In Fig. 1, I have shown my invention applied to a portion of a box-making machine of usual or desired form, wherein shell material blanks cut to proper shape ready to be set-up to form completed boxes are fed to the forming mechanism, but before being set-up, the shell material blanks have coverpaper applied thereto in the form of sheets which have been cut to the desired shape to fit the shell material blanks.

This portion of the box-making machine is shown in Fig. 1, in which stacked blanks l are fed from the stack by a feeding device 2, through groups of rollers 3, which convey the blanks through the machine and after having the cover paper sheets applied thereto, convey the completed blanks to the box setting-up machine or device.

A stack of cover paper sheets 4 is arranged so that the sheets may be withdrawn by a suction feeding device 5, which transfers the sheets individually to a cylinder 6, and through feeding rolls 1 to a gluing roll 8 which spreads adhesive over the surfaces. of the sheets of cover paper, after which the sheets are picked up by a suction roll or cylinder 9 which constitutes the principal feature of the present invention and conveys them into contact with the blanks of shell material I. A roller l cooperates with the roll-or cylinder 9 for pressing the shell material blank and cover sheet together.

The preferred construction of the suction roll or cylinder 9 is shown in detail in Figs. 2 to 5, in which a'hollow shaft i l carries the cylinder. Fixed on the shaft I l are heads l2 having flanges I 3 at their outer edges joined together as at It,

to provide a cylindrical surface. End plates l abut against the extreme outer ends of the flanges Mounted externally of the flanges l3 and end plates l5 are a pair of end heads l6, which carry a plurality of interfitting cylindrical rings l1 and a pair of cylinder plates I 8 and IS, the plate l8 being perforated as will be described hereinafter, while the plate I9 is imperforate but is used to balance the perforated plate l8.

As shown in Fig. 3, the flanges l3 have a semicircular depression or groove 20, in the periphery thereof between said flanges l 3 and the cylindrical spectively connected through pipes 22 with suction motors 23. This arrangement "permits the use of very small suction motors to supply the needed amount of suction for the cylinder.

The opposite edges of the depressionor groove 20 are closed by' sectional blades 24, shown in detail in Fig. 5, which blades 24 are seated in longitudinal recesses 25, in the cylindrical flanges I3, and are normally pressed outwardly by springs 26 in order to seal the opposite edges of the depression or groove 20 between the flanges l3 and the cylindrical rings l'l. e

In a like manner, sectional rings 21 are used at the opposite ends of the depression or groove 20, and are mounted in circumferential grooves,

21' at the outermost ends of the cylindrical flanges I3 and these rings 21 are likewise springpressed, so as to maintain the suction or vacuum within the depression or groove 20. The 'cylindrical rings I! are perforated, as at 28 (see Figs. 3'and 4) to register with two sets of perforations 29 and 30, in the perforated cylinder plate I8.

'I 'he'perforations 30 are located in the bottoms of peripheral grooves 3|, in the cylinder plate l8.

I have shown two pairs of peripheral grooves 3| 1 but the number of grooves and the width thereof may be varied, as desired.

Referring to Fig. 1, a sheet of cover paper, after having the glue or adhesive applied by the roll 8, passes under thelower edge of the suction roll or cylinder 9. The suction m'otors 23 are operated sufllciently so as to maintain a constant suction or vacuum in the depression 20 and the machine is so timed that the cylinder plates l8' sheet on the cylinder and conveys it around to the upperside thereof, as represented in'Fig. l,

the sheet gradually being picked up throughout its length by the perforations 29, as they are uncovered in the rotation of the cylinder plate l8, relative'to the flanged heads l3.

As the cylinder plate l8 rotates carrying the I cover paper sheet thereon, the latter overlaps the grooves 3| but a certain amount of suction will be' lost in the initial picking up of the sheet by reason of the opposite ends of the grooves 3| being open with the perforations 30 and some of the perforations 29 open to the atmosphere until the sheet is entirely on the cylinder which covers additional perforations 29, suflicient to build up additional suction in the cylinder until the suction is sumcient to draw the adjacent portions of thepaper sheets into the grooves 3 I, thereby contracting the sheet'transversely or forming longitudinal groovestherein, suilicient to provide a surplus of material to accommodate for expansion of the intermediate portion of the cover sheet after having them applied to the box blank and during setting up of the blank to form the complete box.

This is shown in Figs. 6 to 9, in which the blanks are assembled, the sheet material blanks I usually being scored asat a, to facilitate setting-up of the sides and as shown in Fig. 7, particularly, the longitudinal grooves which will be temporarily formed in the cover paper sheet I, are designated 17, being intermediate the width of the cover paper sheet, so as to allow expansion thereof in setting-up the box after the edges of the cover paper sheet 4 have been adhesively secured to the shell material blank I, as shown in Fig. 8.

This retains the cover sheet in the proper and desired relation in the finished box and eliminates glue lines along the inner edges of the cover sheet in the set-up box as resulted heretofore and which glue lines present an unsightly appearance to the box.

The box blank is completed by folding in the sides and by adhesively securing the corners of the cover sheet to the end wings, as shown in Fig. 9, which represents the completed blank which pressure may be applied to the blank to set the glue.

I claim:

1. In a machine for making covered box blanks, means for applying cover paper'to shell material and pneumatic means for forming a temporary longitudinal groove or grooves in said cover paper substantially during application thereof to the shell material permitting transverse yielding thereof in setting up the box blank.-

2. In the art of making covered box blanks, the steps of adhesively applying cover material to a box blank of shell material, forming a groove or grooves in said cover material prior to application thereof to the box blank, and infolding a covered portion of the box blank before setting of the adhesive. g

3. In theart of making covered box blanks, the steps of adhesively applying cover material to a box blank of shell material, forming a groove or grooves in said cover material prior to and during application thereof to the box blanks, and

infolding a covered portion of the box blank transversely of the groove or grooves before setting of the adhesive.

4. In the art of making covered box blanks, the steps of adhesively applying cover paper to a box blank having corner creases, forming temporary grooves in the cover paper in the lateral regions of the corner creases during application to the box blank, and inturning portions of the covered box blank along the corner creases before setting of the adhesive.

5. In the art of making covered box blanks, the steps of adhesively applying a cover paper sheet to a box blank of ,shell material, forming only temporary longltudinal'grooves concave in cross-section in the cover paper sheet. just prior to and during application thereof to the box blank permitting transverse yielding of the cover paper sheet in setting up the box blank, and infolding a coveredportion of the box blank before setting of. the adhesive.

6, In the art of making covered box blanks, the 76 step of adhesively applying a cover paper sheet to a box blank of shell material and extending throughout the major portion of the width thereof, and forming only temporary longitudinal grooves concave in cross-section in the cover paper sheet in the lateral regions thereof just prior to and during application thereof to the box blank and infolding opposite edge portions of the box blank and cover sheet before firm setting of the adhesive.

7. In the art of making covered box blanks, the step of adhesively applying a cover paper sheet to a box blank of shell material, said box blank having a central portion and side wing portions, the cover sheet being of a size to extend transversely throughout the width of the central portion and to overlap the side wing portions, and forming only temporary longitudinal grooves in the cover sheet adjacent the side wing portions just prior to and during application thereof to the box blank and thereafter infolding the wing portions of the box blank and cover sheet before firm setting of the adhesive, the grooves in the cover sheet being thereby extended for lateral expansion of the sheet around the corners.

8. In a box-making machine, the combination of means for feeding box blanks of sheet material, means for feeding cover sheets for adhesive application to the box blanks, means cooperating with said cover sheet feeding means for forming only temporary grooves in the sheets just prior to and during application thereof to the box blanks, and means for infolding covered portions of the box blanks transversely relative to the grooves before setting of the adhesive.

9. In a box -making machine for applying cover material to shell material, pneumatic means for forming one or more longitudinal grooves in the cover material prior to application to the shell material.

10. In a box-making machine for applying cover material to shell material, a cylinder arranged to apply the cover material to the shell material, and having pneumatic means for forming one or more longitudinal grooves in the cover material substantially during application to the shell material.

11. In a box-making machine for applying cover material to shell material, a. cylinder for receiving the cover material and having pneumatic means for forming one or more longitudinal grooves in the cover material prior to application to the shell material.

12. In a box-making machine for applying cover material to shell material, a cylinder for receiving the cover material and having pneumatic means for automaticallyforming only temporary longitudinal grooves in the cover material prior to application to the shell material.

13. In a box-making machine for applying cover material to shell material, a cylinder havsucking the cover material into the groove or grooves.

15. In a box-making machine for applying cover material to shell material, a cylinder having pneumatic openings therein for holding the Cover material, said cylinder having one or more peripheral grooves therein with pneumatic openings in said groove or grooves and suction means connected with the pneumatic openings for holding the cover material on the cylinder and for sucking the cover material into the groove or grooves to form only temporary grooves in the cover material during application to the shell material.

16. In a box-making machine, a pneumatic cylinder for feeding sheet material comprising a hub structure having a segmental suction channel in the periphery thereof, and a cylindrical rim structure journaled on said hub structure and having perforations in a portion of the circumference thereof in position to be brought into successive registry with the suction channel upon rotation of the rim structure.

17. In a box-making machine, a pneumatic cylinder for feeding sheet material comprising a hub structure having a segmental suction channel in the periphery thereof, packing rings surrounding said hub structure on opposite sides of the channel, packing blades extending along the edges of said channel between the rings, and a rim structure journaled on the hub structure and having perforations therein in position to register with the suction channel.

18. In a box-making machine, a pneumatic cylinder for feeding sheet material comprising a hub structure having a segmental suction channel in the periphery thereof, packing rings surrounding said hub structure on opposite sides of the channel, packing blades extending along the edges of said channel between the rings, and a rim structure journaled on the hub structure and having perforations therein in position to register with the suction channel, said rim structure having peripheral grooves therein with perforations in said grooves in position to register with the suction channel.

GEORGE B. SCHEFFEY. 

